Bunch builder for bobbins



Sept. 16, 1924. 1,508.934'

W. N. HEATH BUNCH BUILDER FOR BOBBINS Filed Sept. 4. 1923 4 Sheets-Sheet1 Z nveni o 7'.

Sept. 16, 1924. 1,5@.%@

w. N. HEATH BUNCH BUILDER FOR BOBBINS Filed Sept. 1923 4 Sheets-Sheet. 2

Wi/l/ Norman Hem/w At orney Sept. 16 1924.

w. N. HEATH BUNCH BUILDER FOR BOBBINS Filed Sept. 4, 1923 4 Shets-Sheet3 $3 N m m M l\ ing;

Sept. 16 1924. 1,5@&%%

w. N. HEATH BUNCH BUILDER FOR BOBBINS Filed Sept. 1923 4 Sheets-Sheet mi Ma gnvenfoz Vl i/fiam Norman Heaffi Patented Sept. 16, 1924.

UNITED STATES WILLIAM NORMAN HEATH, 0F WACO. TEXAS.

BUNCH BUILDER FOR BOBBINS.

Application filed September 4, 1923.

To all whom it may concern:

Be it known that 1, WILLIAM N. HEATH, a citizen of the United States,residing at Waco, in the county of McLennan and State of Texas, haveinvented a new and useful Mechanical Device Known as the Bunch Builderfor Bobbins, of which the following is a specification.

My invention relates to bunch builders for the bobbins of spinningmachines which make use of a ring or similar frame operated by atraverse motion device to con trol the winding of the bobbins. Spinningmachines having a main traverse motion device adapted to lay the mainwindings on the bobbins and secondary traverse motion device or bunchbuilder are well known; but my bunch builder is an improvement onexisting machines in that the construction employed is particularlysimple and rugged.

The bunch, or relatively small number of turns of yarn or thread woundon the bobbin before beginning the main winding, serves to start themain winding and serves later, when the yarn wound on the bobbin is usedin a loom or cloth weaving machine, to operate the control mechanism ofthe weaving machine so as to prevent running off all of the yarn fromthe bobbin and thus prevent the making of defects in the woven cloth.

The specific advantages of my device are: that by causing a small pileor bunch of yarn of the correct size and shape to be built upon theempty bobbin at the lowest point of the traverse of the laying mechanismof the spinning machine, the bobbin transfer motion on an automaticloom, which depends on the bunch for its action, is more positive anddependable in action and causes less stoppage of the loom, thusincreasing production; and, that by controlling the shape of the bunch,much less yarn is required to operate the transfer mechanism of theloom, thus decreasing the amount of yarn going to waste, since all ofthe yarn which happens to be left on the bobbin at the time of transferon the loom goes into waste.

My bunch builder has a further advantage in that bunching operationtakes place while the dof'fers are piecing up the broken down ends ofyarn, and keeps the ring rail down until the piecing up is finished sothat all the yarn wound upon the bobbins by the doffers in piecing up iskept on the lowest portions of the bobbins.

Serial No. 660,898.

Theessential object of my invention is to provide a simple and ruggeddevice which will be positive in. operation and will have the advantagesand accomplish the purposes set forth above. A further object is toprovide a construction which will be adapted to be substituted inexisting spinning machines for other bunch building devices which do nothave the advantages of my device. Another object is to provide anautomatic release for the bunch builder.

With these objects and other objects hereinafter set forth in view, myinvention consists in the construction and combination of partshereinafter described and claimed.

Referring to the drawings Figure 1 is a side elevation of a part of aspinning machine and shows the control mechanism of my bunch builder,

Figure 2 is a front View of a builder arm with the cams and camfollowers which operate through a chain or cable the traverse motion ofthe ring frame for laying yarn on the bobbins,

Figure 3 is an end View of the cams and cam followers with a partialsection taken across the builder arm and shaft along the line 33 ofFigure 2,

Figure 4 is a front view of a six point bunch builder caminterchangeable with the smaller or bunch builder cam shown in Figures 2and 3,

Figure 5 is an end view of the same,

Figure 6 is a side view of the camshaft and main cam driving arm,

Figure 7 is an end view of the same,

Figure 8 is a front view of the cam shifter block,

Figure 9 is an end View of the same,

And Figure 10 is a partial side elevation of a spinning machine andshows the connection of the builder arm with the ring frame. Forclearness, the locking mechanism shown in Figure l is omitted in thisView.

In the drawings, 1 indicates one of the vertical supports of a spinningmachine which stands upon the floor, 2 represents a horizontal member ofthe machine frame, 3 is the operating rod which works up and down in thebearing 4 to give to the ring frame 52 (Fig. 10) its traverse motion. Asshown, the ring frame 52 has the rings 53 which surround the bobbinspindles 51 mounted on the frame member 50. The operating rod 3 is givenits motion through the follower 5 by the bell crank lever 6 which ispivoted on the pin 49 supported by the frame member 48. The vertical armof the bell crank lever 6 has a segmental portion 47 to which a chain 45is attached. The bell crank lever 6 is under constant tension by usualmeans (not shown) which tends to pull the chain 45 to the left and alsotends to raise the operating rod 3. Chain 45 passes over the pulley 46and is attached to the builder arm 31. The cam 27 acts to force thebuilder arm 31 down against the tension on the chain 45 and therebylower the ring frame 52 periodically to give it a traverse motion.

Referring to Figures 1 and 2, 21 is the shaft on which are mounted theshifter fingers 24 and 25, which move the bunch builder cam 26 intoengagement with its follower 29. This shaft 21 is supported near one endby the hanger 44 mounted on the frame 2. A return stop 19 is fastened bya set screw 20 on the shaft 21 and acts against the frame 2 so as toprevent the shaft 21 from turning back too far. A shifter lever 17 isalso fastened by a set screw to the shaft 21. This shifter lever 17 hasa slot 16 in its lower part. A latch arm 12 carries a stud or bolt 15near its upper end and this bolt 15 is slidably disposed in the slot 16,thus serving to operatively connect the shifter lever 17 and the latcharm 12. The latch arm 12 has a slot 14 having a locking shoulder 13,this slot and shoulder being adapted to act on the stud 10 which ismounted on the support 11 fastened to the frame 1. )Vhen the primary ormain traverse motion device is in operation, the bunch builder, orsecondary traverse motion device, is not in operation and the controlparts described in this paragraph are in the positions shown in fulllines in Figure 1. The dash and dot lines in Figure lshow the positionsof the control parts when the bunch builder is in operation and theprimary traverse motion is prevented from operating.

\Vhen the control parts are in the positions shown in dash and dotlines, the shaft .21 is turned counter clockwise a few degrees and, bymeans of the shifter fingers 24 and 25 (Figure 2), the bunch builder cam26 is shifted into operation. The shaft 21 is locked in its turnedposition by the shoulder 13 (Figure 1) of the latch arm 12 actingagainst the stud 10. Thus the secondary traverse motion device, or bunchbuilder, operates as long as the shoulder 13 locks the mechanism byacting against the stud 10. The automatic release of the bunch builderis accomplished by providing a stud or pin 9 projecting from the ratchetwheel 7 of the pick mechanism near its periphery, this pin 9 beingadapted to strike the latch arm 12 to release the shoulder 13 from itslocked position over the stud 10, thus releasing the bunch builder andpermitting the primary traverse motion to operate. The ratchet wheel 7turns the shaft 8; both the ratchet wheel 7 and the shaft 8 are parts ofthe primary traverse .motion device, the ratchet wheel being turned by apick mechanism as the builder arm moves up and down, said ratchet wheeland pick mechanism being of any type commonly used in the art.

Regulation of my bunch builder so as to determine the size of thebunches built on the bobbins is accomplished by adjustment ofthe ratchetwheel 7 so that the angle through which the ratchet wheel must rotatebefore the pin 9 strikes the latch arm 12 is predetermined.

As shown in Figures 2 and 3, the primary traverse motion is operated bythe primary cam 27 driven by the camshaft 38 and acting against the camfollower 30 mounted on the builder arm 31 which is pivotally mounted at32 to a fixed part of the frame. The builder arm 31 is, of course,operatively, connected to the ring frame for laying the yarn on thebobbins.

My bunch builder cam or secondary cam 26 is also mounted on the camshaft38, and, when in the operating position, acts against the cam follower29 which is alsomounted on the builder arm 31 and thus operates thetraverse motion device in the place of the primary cam 27. The cam 26 iskeyed to and slidably mounted on the camshaft 38 and is normally (thatis, when the primary traverse motion is in operation) held in theposition shown in Figure 3 by the pressure of the spring 45. In thisposition, the cam 26 does not act against its follower 29 and theprimary cam 27 is allowed to act against its follower 30 to operate theprimary traverse motion. But when the control parts are moved to thepositions shown in dash and dot lines (Figure 1), the shaft 21 is turnedso as to move the shifter fingers 24 and 25 (Figures 2 and 3) therebysliding cam 26 toward cam 27, thus bringing cam 26 into operationagainst its follower 29 and setting up the bunch building traversemotion.

As shown in Figures 2 and 3, the shifter fingers 24 and 25 are fastenedto the shaft 21 by set screws, and the shaft 21 turns in a shifter block22 which is mounted on but does not turn with the camshaft 38, theshifter block 22 being held in place by the screw head 23.

In Figures 4 and 5 is shown a six point cam 26 which is interchangeablewith cam 26. The difference between cams 26 and 26 is essentially thenumber of points. Each cam has a hub 42 adapted to fit over the camshaft38 and has a keyway 41. The face of the cam may be depressed as shown at43 in order to make the construction light in weight.

The camshaft I employ is shown in Figures 6 and 7, this camshaft beingbut slightly different from and interchangeable with the camshaft now inuse in some machines. The camshaft 38 has an arm 39 rigidly mountedthereon, the arm 39 serving through the stud 28 to drive the primary cam27. In the shaft 38 is a long keyway 40, a long key (not shown) fittingbetween keyways 40 and 41. The camshaft 38 is turned down somewhat at 34to fit into the bearing 35 in the shifter block 22 and a screw threadedhole 33 is provided for the screw 23. The camshaft 38 is also turneddown at 41 to provide for the mounting of the pulley or other drivingmeans not shown.

The shifter block 22 is shown in detail in Figures 8 and 9. The bearing35 fits over the portion 34 of the camshaft 38 as said, and the bearing36 serves to hold the shaft 21. An oil hole 37 is provided in theshifter block.

It will be seen from this description and drawings, that my bunchbuilder is of simple and strong construction and is adapted to be fittedto machines now'in use with a minimum number of changes and new workingparts.

In the use of a spinning machine having my bunch builder attachedthereto, the bunch builder remains idle until the bobbins are full andhave been dofied. Before starting the machine, the dofler raises theshifter lever up until the shoulder 13 catches over the stud 10, whichoperation brings the bunch builder cam into operation. After startingthe machine, the bunch builder will then operate to run itspredetermined number of layers of yarn upon the bobbins and afterwardsautomatically release itself with out further attention upon the part ofthe machine operator.

Having thus described my invention, what I claim is 7 1. In a machine ofthe character described having a traverse motion operated by a primarycam fixed on a driven shaft and a builder arm carrying a primary camfollower, in combination, a secondary cam follower secured to thebuilder arm, a secondary bunch builder cam slidably disposed on thedriven shaft and adapted to be removed and replaced without disturbingthe primary traverse motion mechanism, and means for moving thesecondary cam into and out of engagement with its follower.

2. In a machine of the character described having a traverse motionoperated by a primary cam fixed on a driven shaft and a builder armcarrying a primary cam follower, in combination, a secondary camfollower secured to the builder arm, a secondary bunch builder camslidably disposed on the driven shaft and adapted to be removed andreplaced without disturbing the primary traverse motion mechanism, andmeans supported on the end of the driven shaft for moving the secondarycam into and out of engagement with its follower.

3. In a machine of the character described having a traverse motionoperated by aprimary eam fixed on a driven shaft and a builder armcarrying a primary cam follower, in combination, a secondary camfollower secured to the builder arm, a secondary bunch builder camslidably disposed on the driven shaft and adapted to be removed andreplaced without disturbing the primary traverse motion mechanism, a

spring for moving the secondary cam out of engagement with its follower,a shifting mechanism for moving the secondary cam into engagement withits follower, and looking means for the shifting mechanism.

4. In a machine of the character described having a traverse motionoperated by a primary cam fixed on a-driven shaft and a builder armcarrying a primary cam follower and a pick wheel, in combination, asecondary cam follower secured to the builder arm, a secondary bunchbuilder cam slidably disposed on the driven shaft and adapted to beremoved and replaced without disturbing the primary traverse motionmechanism, a spring for moving the sec ondary cam out of engagement withits follower, a shifting mechanism for moving the secondary cam intoengagement with its follower, and locking means for the shiftingmechanism arranged to be automatically released by a stud secured to thepick wheel near its periphery.

WILLIAM NORMAN HEATH.

